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sharding_runtime_d_params.idl
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sharding_runtime_d_params.idl
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# Copyright (C) 2019-present MongoDB, Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the Server Side Public License, version 1,
# as published by MongoDB, Inc.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# Server Side Public License for more details.
#
# You should have received a copy of the Server Side Public License
# along with this program. If not, see
# <http://www.mongodb.com/licensing/server-side-public-license>.
#
# As a special exception, the copyright holders give permission to link the
# code of portions of this program with the OpenSSL library under certain
# conditions as described in each individual source file and distribute
# linked combinations including the program with the OpenSSL library. You
# must comply with the Server Side Public License in all respects for
# all of the code used other than as permitted herein. If you modify file(s)
# with this exception, you may extend this exception to your version of the
# file(s), but you are not obligated to do so. If you do not wish to do so,
# delete this exception statement from your version. If you delete this
# exception statement from all source files in the program, then also delete
# it in the license file.
global:
cpp_namespace: mongo
server_parameters:
rangeDeleterBatchSize:
description: >-
The maximum number of documents in each batch to delete during the cleanup stage of chunk
migration (or the cleanupOrphaned command). A value of 0 indicates that the system chooses
the default value (128).
set_at: [startup, runtime]
cpp_vartype: AtomicWord<int>
cpp_varname: rangeDeleterBatchSize
validator:
gte: 0
default: 128
rangeDeleterBatchDelayMS:
description: >-
The amount of time in milliseconds to wait before the next batch of deletion during the
cleanup stage of chunk migration (or the cleanupOrphaned command).
set_at: [startup, runtime]
cpp_vartype: AtomicWord<int>
cpp_varname: rangeDeleterBatchDelayMS
validator:
gte: 0
default: 20
migrateCloneInsertionBatchSize:
description: >-
The maximum number of documents to insert in a single batch during the cloning step of
the migration process. The default value of 0 indicates no maximum number of documents
per batch. However, in practice, this results in batches that contain up to 16 MB of
documents. The value 1 corresponds to MongoDB 3.4.16 (and earlier) behavior.
set_at: [startup, runtime]
cpp_vartype: AtomicWord<int>
cpp_varname: migrateCloneInsertionBatchSize
validator:
gte: 0
default: 0
migrateCloneInsertionBatchDelayMS:
description: >-
Time in milliseconds to wait between batches of insertions during cloning step of the
migration process. This wait is in addition to the secondaryThrottle. The default value
of 0 indicates no additional wait.
set_at: [startup, runtime]
cpp_vartype: AtomicWord<int>
cpp_varname: migrateCloneInsertionBatchDelayMS
validator:
gte: 0
default: 0
migrationLockAcquisitionMaxWaitMS:
description: 'How long to wait to acquire collection lock for migration related operations.'
set_at: [startup, runtime]
cpp_vartype: AtomicWord<int>
cpp_varname: migrationLockAcquisitionMaxWaitMS
default: 500
orphanCleanupDelaySecs:
description: 'How long to wait before starting cleanup of an emigrated chunk range.'
set_at: [startup, runtime]
cpp_vartype: AtomicWord<int>
cpp_varname: orphanCleanupDelaySecs
default: 900
disableResumableRangeDeleter:
description: >-
Disable the resumable range deleter. Ranges will not be submitted for deletion, and if an
incoming migration sees orphans in the incoming range, the migration will fail. The
resumable range deleter replaced the old non-durable range deleter as of FCV 4.4.
set_at: [startup]
cpp_vartype: AtomicWord<bool>
cpp_varname : disableResumableRangeDeleter
default: false
enableShardedIndexConsistencyCheck:
description: >-
Enable the periodic sharded index consistency check on the config server's primary.
The count of sharded collections with inconsistent indexes is exposed via the
'shardedIndexConsistency' section in the serverStatus output.
set_at: [startup, runtime]
cpp_vartype: AtomicWord<bool>
cpp_varname: enableShardedIndexConsistencyCheck
default: true
shardedIndexConsistencyCheckIntervalMS:
description: 'Time interval in milliseconds between subsequent index checks.'
set_at: [startup]
cpp_vartype: int
cpp_varname: shardedIndexConsistencyCheckIntervalMS
default: 600000
minNumChunksForSessionsCollection:
description: 'The minimum number of chunks for config.system.sessions collection'
set_at: [startup, runtime]
cpp_vartype: AtomicWord<int32_t>
cpp_varname: minNumChunksForSessionsCollection
default: 1024
validator: { gte: 1, lte: 1000000 }